It basically tells your employer, whether your out taking care of company business, or personal business. Just do your job. You get caught trying to hide, they will fire, just because you gave them reason to believe you have something to hide.
I work in a big warehouse, in the cigarette department. There are security cameras throughout the warehouse, but I'm special, I've got three pointed at my work station. It's not that I'm not trusted (hope), but it's just high traffic area, near the time clocks, our secure gate into the department, and a staging area. I've always worked like there was someone could be watching, or there were unseen security cameras, so wasn't a big deal when the installed them. Nothing to hide, nothing to fear. I appreciate having a job, and the security of know that they have no reason to question my performance. In this economy, and with more of similar Obama-type-changes, its a little insane to jeopardize what you've got, although 99 weeks of sitting around the house, waiting for the free health insurance to kick in, doesn't sound all that bad...